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<h1>thread/thread.cc</h1>A glibmm thread example.
<p>
<div class="fragment"><pre>
<span class="preprocessor">#include <iostream></span>
<span class="preprocessor">#include <queue></span>
<span class="preprocessor">#include <sigc++/class_slot.h></span>
<span class="preprocessor">#include <<a class="code" href="random_8h.html">glibmm/random.h</a>></span>
<span class="preprocessor">#include <<a class="code" href="thread_8h.html">glibmm/thread.h</a>></span>
<span class="preprocessor">#include <<a class="code" href="timer_8h.html">glibmm/timer.h</a>></span>
<span class="keyword">namespace</span>
<span class="keyword"></span>{
<span class="keyword">class </span>MessageQueue
{
<span class="keyword">public</span>:
MessageQueue();
~MessageQueue();
<span class="keywordtype">void</span> producer();
<span class="keywordtype">void</span> consumer();
<span class="keyword">private</span>:
<a name="_a17"></a><a class="code" href="classGlib_1_1Mutex.html">Glib::Mutex</a> mutex_;
<a name="_a18"></a><a class="code" href="classGlib_1_1Cond.html">Glib::Cond</a> cond_push_;
<a class="code" href="classGlib_1_1Cond.html">Glib::Cond</a> cond_pop_;
std::queue<int> queue_;
};
MessageQueue::MessageQueue()
{}
MessageQueue::~MessageQueue()
{}
<span class="keywordtype">void</span> MessageQueue::producer()
{
<a name="_a19"></a><a class="code" href="classGlib_1_1Rand.html">Glib::Rand</a> rand (1234);
<span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 200; ++i)
{
{
<a name="_a20"></a><a class="code" href="classGlib_1_1Mutex_1_1Lock.html">Glib::Mutex::Lock</a> lock (mutex_);
<span class="keywordflow">while</span>(queue_.size() >= 64)
cond_pop_.wait(mutex_);
queue_.push(i);
std::cout << <span class="charliteral">'*'</span>;
std::cout.flush();
cond_push_.signal();
}
<span class="keywordflow">if</span>(rand.<a name="a21"></a><a class="code" href="classGlib_1_1Rand.html#a4">get_bool</a>())
<span class="keywordflow">continue</span>;
<a name="a22"></a><a class="code" href="namespaceGlib.html#a230">Glib::usleep</a>(rand.<a name="a23"></a><a class="code" href="classGlib_1_1Rand.html#a6">get_int_range</a>(0, 100000));
}
}
<span class="keywordtype">void</span> MessageQueue::consumer()
{
<a class="code" href="classGlib_1_1Rand.html">Glib::Rand</a> rand (4567);
<span class="keywordflow">for</span>(;;)
{
{
<a class="code" href="classGlib_1_1Mutex_1_1Lock.html">Glib::Mutex::Lock</a> lock (mutex_);
<span class="keywordflow">while</span>(queue_.empty())
cond_push_.wait(mutex_);
<span class="keyword">const</span> <span class="keywordtype">int</span> i = queue_.front();
queue_.pop();
std::cout << <span class="stringliteral">"\x08 \x08"</span>;
std::cout.flush();
cond_pop_.signal();
<span class="keywordflow">if</span>(i >= 199)
<span class="keywordflow">break</span>;
}
<span class="keywordflow">if</span>(rand.<a class="code" href="classGlib_1_1Rand.html#a4">get_bool</a>())
<span class="keywordflow">continue</span>;
<a class="code" href="namespaceGlib.html#a230">Glib::usleep</a>(rand.<a class="code" href="classGlib_1_1Rand.html#a6">get_int_range</a>(10000, 200000));
}
}
}
<span class="keywordtype">int</span> main(<span class="keywordtype">int</span>, <span class="keywordtype">char</span>**)
{
<a name="a24"></a><a class="code" href="group__Threads.html#a0">Glib::thread_init</a>();
MessageQueue queue;
<a name="_a25"></a><a class="code" href="classGlib_1_1Thread.html">Glib::Thread</a> *<span class="keyword">const</span> producer = <a name="a26"></a><a class="code" href="classGlib_1_1Thread.html#d0">Glib::Thread::create</a>(
SigC::slot_class(queue, &MessageQueue::producer), <span class="keyword">true</span>);
<a class="code" href="classGlib_1_1Thread.html">Glib::Thread</a> *<span class="keyword">const</span> consumer = <a class="code" href="classGlib_1_1Thread.html#d0">Glib::Thread::create</a>(
SigC::slot_class(queue, &MessageQueue::consumer), <span class="keyword">true</span>);
producer-><a name="a27"></a><a class="code" href="classGlib_1_1Thread.html#a1">join</a>();
consumer-><a class="code" href="classGlib_1_1Thread.html#a1">join</a>();
std::cout << std::endl;
<span class="keywordflow">return</span> 0;
}
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